The phrase "authoritative point" is correct and usable in written English.
It can be used when referring to a statement or perspective that is considered to be reliable, credible, or commanding respect in a particular context.
Example: "The researcher provided an authoritative point on the subject, which helped clarify the ongoing debate."
Alternatives: "definitive statement" or "credible perspective".
Even male drivers, who under unscientific observation generally appeared less likely to obey the wavers than their female counterparts, pause when they are the objects of Mr. Gray's authoritative pointing.
Her voice was authoritative, and she squinted a bit when making an important point, said Richard K. Lieberman, director of the La Guardia and Wagner Archives.
There is significant value to all stakeholders in having a common authoritative reference point for all industry participants, minimizing the time and cost associated with acquiring accurate and consistent information regarding regulatory requirements and food safety standards.
As the year draws to a close, the annual review by the authoritative Death Penalty Information Centre points to an ongoing withering of the practice of judicial killings in the US [pdf].
It was read against the background of and supplemented by— existing case law, rather than being seen as a complete set of authoritative starting points for legal reasoning, as were the Continental civil codes.
It uses selected open datasources like Wikipedia and OpenStreetMap as authoritative sources for points of interest, and links Web content such as photos, tweets, reviews and opening hours to these points.
But as four authoritative scientists have pointed out, "Today too many people are chasing too little money to support increasingly expensive research".
Four authoritative panels have pointed to further study of environmental chemicals as a promising direction for prevention [ Cogliano et al. 2011; IBCERCC 2013; Institute of Medicine (IOM) 2011; President's Cancer Panel 2010].
THE image of a woman rising on point, simultaneously authoritative and fragile, exalted and vulnerable, is central to ballet.
